| // SPDX-License-Identifier: GPL-2.0 OR MIT |
| /************************************************************************** |
| * |
| * Copyright 2012-2015 VMware, Inc., Palo Alto, CA., USA |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| **************************************************************************/ |
| |
| #include <linux/highmem.h> |
| |
| #include "vmwgfx_drv.h" |
| |
| /* |
| * If we set up the screen target otable, screen objects stop working. |
| */ |
| |
| #define VMW_OTABLE_SETUP_SUB ((VMWGFX_ENABLE_SCREEN_TARGET_OTABLE ? 0 : 1)) |
| |
| #ifdef CONFIG_64BIT |
| #define VMW_PPN_SIZE 8 |
| #define VMW_MOBFMT_PTDEPTH_0 SVGA3D_MOBFMT_PTDEPTH64_0 |
| #define VMW_MOBFMT_PTDEPTH_1 SVGA3D_MOBFMT_PTDEPTH64_1 |
| #define VMW_MOBFMT_PTDEPTH_2 SVGA3D_MOBFMT_PTDEPTH64_2 |
| #else |
| #define VMW_PPN_SIZE 4 |
| #define VMW_MOBFMT_PTDEPTH_0 SVGA3D_MOBFMT_PTDEPTH_0 |
| #define VMW_MOBFMT_PTDEPTH_1 SVGA3D_MOBFMT_PTDEPTH_1 |
| #define VMW_MOBFMT_PTDEPTH_2 SVGA3D_MOBFMT_PTDEPTH_2 |
| #endif |
| |
| /* |
| * struct vmw_mob - Structure containing page table and metadata for a |
| * Guest Memory OBject. |
| * |
| * @num_pages Number of pages that make up the page table. |
| * @pt_level The indirection level of the page table. 0-2. |
| * @pt_root_page DMA address of the level 0 page of the page table. |
| */ |
| struct vmw_mob { |
| struct ttm_buffer_object *pt_bo; |
| unsigned long num_pages; |
| unsigned pt_level; |
| dma_addr_t pt_root_page; |
| uint32_t id; |
| }; |
| |
| /* |
| * struct vmw_otable - Guest Memory OBject table metadata |
| * |
| * @size: Size of the table (page-aligned). |
| * @page_table: Pointer to a struct vmw_mob holding the page table. |
| */ |
| static const struct vmw_otable pre_dx_tables[] = { |
| {VMWGFX_NUM_MOB * SVGA3D_OTABLE_MOB_ENTRY_SIZE, NULL, true}, |
| {VMWGFX_NUM_GB_SURFACE * SVGA3D_OTABLE_SURFACE_ENTRY_SIZE, NULL, true}, |
| {VMWGFX_NUM_GB_CONTEXT * SVGA3D_OTABLE_CONTEXT_ENTRY_SIZE, NULL, true}, |
| {VMWGFX_NUM_GB_SHADER * SVGA3D_OTABLE_SHADER_ENTRY_SIZE, NULL, true}, |
| {VMWGFX_NUM_GB_SCREEN_TARGET * SVGA3D_OTABLE_SCREEN_TARGET_ENTRY_SIZE, |
| NULL, VMWGFX_ENABLE_SCREEN_TARGET_OTABLE} |
| }; |
| |
| static const struct vmw_otable dx_tables[] = { |
| {VMWGFX_NUM_MOB * SVGA3D_OTABLE_MOB_ENTRY_SIZE, NULL, true}, |
| {VMWGFX_NUM_GB_SURFACE * SVGA3D_OTABLE_SURFACE_ENTRY_SIZE, NULL, true}, |
| {VMWGFX_NUM_GB_CONTEXT * SVGA3D_OTABLE_CONTEXT_ENTRY_SIZE, NULL, true}, |
| {VMWGFX_NUM_GB_SHADER * SVGA3D_OTABLE_SHADER_ENTRY_SIZE, NULL, true}, |
| {VMWGFX_NUM_GB_SCREEN_TARGET * SVGA3D_OTABLE_SCREEN_TARGET_ENTRY_SIZE, |
| NULL, VMWGFX_ENABLE_SCREEN_TARGET_OTABLE}, |
| {VMWGFX_NUM_DXCONTEXT * sizeof(SVGAOTableDXContextEntry), NULL, true}, |
| }; |
| |
| static int vmw_mob_pt_populate(struct vmw_private *dev_priv, |
| struct vmw_mob *mob); |
| static void vmw_mob_pt_setup(struct vmw_mob *mob, |
| struct vmw_piter data_iter, |
| unsigned long num_data_pages); |
| |
| /* |
| * vmw_setup_otable_base - Issue an object table base setup command to |
| * the device |
| * |
| * @dev_priv: Pointer to a device private structure |
| * @type: Type of object table base |
| * @offset Start of table offset into dev_priv::otable_bo |
| * @otable Pointer to otable metadata; |
| * |
| * This function returns -ENOMEM if it fails to reserve fifo space, |
| * and may block waiting for fifo space. |
| */ |
| static int vmw_setup_otable_base(struct vmw_private *dev_priv, |
| SVGAOTableType type, |
| struct ttm_buffer_object *otable_bo, |
| unsigned long offset, |
| struct vmw_otable *otable) |
| { |
| struct { |
| SVGA3dCmdHeader header; |
| SVGA3dCmdSetOTableBase64 body; |
| } *cmd; |
| struct vmw_mob *mob; |
| const struct vmw_sg_table *vsgt; |
| struct vmw_piter iter; |
| int ret; |
| |
| BUG_ON(otable->page_table != NULL); |
| |
| vsgt = vmw_bo_sg_table(otable_bo); |
| vmw_piter_start(&iter, vsgt, offset >> PAGE_SHIFT); |
| WARN_ON(!vmw_piter_next(&iter)); |
| |
| mob = vmw_mob_create(otable->size >> PAGE_SHIFT); |
| if (unlikely(mob == NULL)) { |
| DRM_ERROR("Failed creating OTable page table.\n"); |
| return -ENOMEM; |
| } |
| |
| if (otable->size <= PAGE_SIZE) { |
| mob->pt_level = VMW_MOBFMT_PTDEPTH_0; |
| mob->pt_root_page = vmw_piter_dma_addr(&iter); |
| } else if (vsgt->num_regions == 1) { |
| mob->pt_level = SVGA3D_MOBFMT_RANGE; |
| mob->pt_root_page = vmw_piter_dma_addr(&iter); |
| } else { |
| ret = vmw_mob_pt_populate(dev_priv, mob); |
| if (unlikely(ret != 0)) |
| goto out_no_populate; |
| |
| vmw_mob_pt_setup(mob, iter, otable->size >> PAGE_SHIFT); |
| mob->pt_level += VMW_MOBFMT_PTDEPTH_1 - SVGA3D_MOBFMT_PTDEPTH_1; |
| } |
| |
| cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd)); |
| if (unlikely(cmd == NULL)) { |
| ret = -ENOMEM; |
| goto out_no_fifo; |
| } |
| |
| memset(cmd, 0, sizeof(*cmd)); |
| cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE64; |
| cmd->header.size = sizeof(cmd->body); |
| cmd->body.type = type; |
| cmd->body.baseAddress = mob->pt_root_page >> PAGE_SHIFT; |
| cmd->body.sizeInBytes = otable->size; |
| cmd->body.validSizeInBytes = 0; |
| cmd->body.ptDepth = mob->pt_level; |
| |
| /* |
| * The device doesn't support this, But the otable size is |
| * determined at compile-time, so this BUG shouldn't trigger |
| * randomly. |
| */ |
| BUG_ON(mob->pt_level == VMW_MOBFMT_PTDEPTH_2); |
| |
| vmw_cmd_commit(dev_priv, sizeof(*cmd)); |
| otable->page_table = mob; |
| |
| return 0; |
| |
| out_no_fifo: |
| out_no_populate: |
| vmw_mob_destroy(mob); |
| return ret; |
| } |
| |
| /* |
| * vmw_takedown_otable_base - Issue an object table base takedown command |
| * to the device |
| * |
| * @dev_priv: Pointer to a device private structure |
| * @type: Type of object table base |
| * |
| */ |
| static void vmw_takedown_otable_base(struct vmw_private *dev_priv, |
| SVGAOTableType type, |
| struct vmw_otable *otable) |
| { |
| struct { |
| SVGA3dCmdHeader header; |
| SVGA3dCmdSetOTableBase body; |
| } *cmd; |
| struct ttm_buffer_object *bo; |
| |
| if (otable->page_table == NULL) |
| return; |
| |
| bo = otable->page_table->pt_bo; |
| cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd)); |
| if (unlikely(cmd == NULL)) |
| return; |
| |
| memset(cmd, 0, sizeof(*cmd)); |
| cmd->header.id = SVGA_3D_CMD_SET_OTABLE_BASE; |
| cmd->header.size = sizeof(cmd->body); |
| cmd->body.type = type; |
| cmd->body.baseAddress = 0; |
| cmd->body.sizeInBytes = 0; |
| cmd->body.validSizeInBytes = 0; |
| cmd->body.ptDepth = SVGA3D_MOBFMT_INVALID; |
| vmw_cmd_commit(dev_priv, sizeof(*cmd)); |
| |
| if (bo) { |
| int ret; |
| |
| ret = ttm_bo_reserve(bo, false, true, NULL); |
| BUG_ON(ret != 0); |
| |
| vmw_bo_fence_single(bo, NULL); |
| ttm_bo_unreserve(bo); |
| } |
| |
| vmw_mob_destroy(otable->page_table); |
| otable->page_table = NULL; |
| } |
| |
| |
| static int vmw_otable_batch_setup(struct vmw_private *dev_priv, |
| struct vmw_otable_batch *batch) |
| { |
| unsigned long offset; |
| unsigned long bo_size; |
| struct vmw_otable *otables = batch->otables; |
| SVGAOTableType i; |
| int ret; |
| |
| bo_size = 0; |
| for (i = 0; i < batch->num_otables; ++i) { |
| if (!otables[i].enabled) |
| continue; |
| |
| otables[i].size = |
| (otables[i].size + PAGE_SIZE - 1) & PAGE_MASK; |
| bo_size += otables[i].size; |
| } |
| |
| ret = vmw_bo_create_and_populate(dev_priv, bo_size, &batch->otable_bo); |
| if (unlikely(ret != 0)) |
| return ret; |
| |
| offset = 0; |
| for (i = 0; i < batch->num_otables; ++i) { |
| if (!batch->otables[i].enabled) |
| continue; |
| |
| ret = vmw_setup_otable_base(dev_priv, i, batch->otable_bo, |
| offset, |
| &otables[i]); |
| if (unlikely(ret != 0)) |
| goto out_no_setup; |
| offset += otables[i].size; |
| } |
| |
| return 0; |
| |
| out_no_setup: |
| for (i = 0; i < batch->num_otables; ++i) { |
| if (batch->otables[i].enabled) |
| vmw_takedown_otable_base(dev_priv, i, |
| &batch->otables[i]); |
| } |
| |
| ttm_bo_put(batch->otable_bo); |
| batch->otable_bo = NULL; |
| return ret; |
| } |
| |
| /* |
| * vmw_otables_setup - Set up guest backed memory object tables |
| * |
| * @dev_priv: Pointer to a device private structure |
| * |
| * Takes care of the device guest backed surface |
| * initialization, by setting up the guest backed memory object tables. |
| * Returns 0 on success and various error codes on failure. A successful return |
| * means the object tables can be taken down using the vmw_otables_takedown |
| * function. |
| */ |
| int vmw_otables_setup(struct vmw_private *dev_priv) |
| { |
| struct vmw_otable **otables = &dev_priv->otable_batch.otables; |
| int ret; |
| |
| if (has_sm4_context(dev_priv)) { |
| *otables = kmemdup(dx_tables, sizeof(dx_tables), GFP_KERNEL); |
| if (!(*otables)) |
| return -ENOMEM; |
| |
| dev_priv->otable_batch.num_otables = ARRAY_SIZE(dx_tables); |
| } else { |
| *otables = kmemdup(pre_dx_tables, sizeof(pre_dx_tables), |
| GFP_KERNEL); |
| if (!(*otables)) |
| return -ENOMEM; |
| |
| dev_priv->otable_batch.num_otables = ARRAY_SIZE(pre_dx_tables); |
| } |
| |
| ret = vmw_otable_batch_setup(dev_priv, &dev_priv->otable_batch); |
| if (unlikely(ret != 0)) |
| goto out_setup; |
| |
| return 0; |
| |
| out_setup: |
| kfree(*otables); |
| return ret; |
| } |
| |
| static void vmw_otable_batch_takedown(struct vmw_private *dev_priv, |
| struct vmw_otable_batch *batch) |
| { |
| SVGAOTableType i; |
| struct ttm_buffer_object *bo = batch->otable_bo; |
| int ret; |
| |
| for (i = 0; i < batch->num_otables; ++i) |
| if (batch->otables[i].enabled) |
| vmw_takedown_otable_base(dev_priv, i, |
| &batch->otables[i]); |
| |
| ret = ttm_bo_reserve(bo, false, true, NULL); |
| BUG_ON(ret != 0); |
| |
| vmw_bo_fence_single(bo, NULL); |
| ttm_bo_unreserve(bo); |
| |
| ttm_bo_put(batch->otable_bo); |
| batch->otable_bo = NULL; |
| } |
| |
| /* |
| * vmw_otables_takedown - Take down guest backed memory object tables |
| * |
| * @dev_priv: Pointer to a device private structure |
| * |
| * Take down the Guest Memory Object tables. |
| */ |
| void vmw_otables_takedown(struct vmw_private *dev_priv) |
| { |
| vmw_otable_batch_takedown(dev_priv, &dev_priv->otable_batch); |
| kfree(dev_priv->otable_batch.otables); |
| } |
| |
| /* |
| * vmw_mob_calculate_pt_pages - Calculate the number of page table pages |
| * needed for a guest backed memory object. |
| * |
| * @data_pages: Number of data pages in the memory object buffer. |
| */ |
| static unsigned long vmw_mob_calculate_pt_pages(unsigned long data_pages) |
| { |
| unsigned long data_size = data_pages * PAGE_SIZE; |
| unsigned long tot_size = 0; |
| |
| while (likely(data_size > PAGE_SIZE)) { |
| data_size = DIV_ROUND_UP(data_size, PAGE_SIZE); |
| data_size *= VMW_PPN_SIZE; |
| tot_size += (data_size + PAGE_SIZE - 1) & PAGE_MASK; |
| } |
| |
| return tot_size >> PAGE_SHIFT; |
| } |
| |
| /* |
| * vmw_mob_create - Create a mob, but don't populate it. |
| * |
| * @data_pages: Number of data pages of the underlying buffer object. |
| */ |
| struct vmw_mob *vmw_mob_create(unsigned long data_pages) |
| { |
| struct vmw_mob *mob = kzalloc(sizeof(*mob), GFP_KERNEL); |
| |
| if (unlikely(!mob)) |
| return NULL; |
| |
| mob->num_pages = vmw_mob_calculate_pt_pages(data_pages); |
| |
| return mob; |
| } |
| |
| /* |
| * vmw_mob_pt_populate - Populate the mob pagetable |
| * |
| * @mob: Pointer to the mob the pagetable of which we want to |
| * populate. |
| * |
| * This function allocates memory to be used for the pagetable, and |
| * adjusts TTM memory accounting accordingly. Returns ENOMEM if |
| * memory resources aren't sufficient and may cause TTM buffer objects |
| * to be swapped out by using the TTM memory accounting function. |
| */ |
| static int vmw_mob_pt_populate(struct vmw_private *dev_priv, |
| struct vmw_mob *mob) |
| { |
| BUG_ON(mob->pt_bo != NULL); |
| |
| return vmw_bo_create_and_populate(dev_priv, mob->num_pages * PAGE_SIZE, &mob->pt_bo); |
| } |
| |
| /** |
| * vmw_mob_assign_ppn - Assign a value to a page table entry |
| * |
| * @addr: Pointer to pointer to page table entry. |
| * @val: The page table entry |
| * |
| * Assigns a value to a page table entry pointed to by *@addr and increments |
| * *@addr according to the page table entry size. |
| */ |
| #if (VMW_PPN_SIZE == 8) |
| static void vmw_mob_assign_ppn(u32 **addr, dma_addr_t val) |
| { |
| *((u64 *) *addr) = val >> PAGE_SHIFT; |
| *addr += 2; |
| } |
| #else |
| static void vmw_mob_assign_ppn(u32 **addr, dma_addr_t val) |
| { |
| *(*addr)++ = val >> PAGE_SHIFT; |
| } |
| #endif |
| |
| /* |
| * vmw_mob_build_pt - Build a pagetable |
| * |
| * @data_addr: Array of DMA addresses to the underlying buffer |
| * object's data pages. |
| * @num_data_pages: Number of buffer object data pages. |
| * @pt_pages: Array of page pointers to the page table pages. |
| * |
| * Returns the number of page table pages actually used. |
| * Uses atomic kmaps of highmem pages to avoid TLB thrashing. |
| */ |
| static unsigned long vmw_mob_build_pt(struct vmw_piter *data_iter, |
| unsigned long num_data_pages, |
| struct vmw_piter *pt_iter) |
| { |
| unsigned long pt_size = num_data_pages * VMW_PPN_SIZE; |
| unsigned long num_pt_pages = DIV_ROUND_UP(pt_size, PAGE_SIZE); |
| unsigned long pt_page; |
| u32 *addr, *save_addr; |
| unsigned long i; |
| struct page *page; |
| |
| for (pt_page = 0; pt_page < num_pt_pages; ++pt_page) { |
| page = vmw_piter_page(pt_iter); |
| |
| save_addr = addr = kmap_atomic(page); |
| |
| for (i = 0; i < PAGE_SIZE / VMW_PPN_SIZE; ++i) { |
| vmw_mob_assign_ppn(&addr, |
| vmw_piter_dma_addr(data_iter)); |
| if (unlikely(--num_data_pages == 0)) |
| break; |
| WARN_ON(!vmw_piter_next(data_iter)); |
| } |
| kunmap_atomic(save_addr); |
| vmw_piter_next(pt_iter); |
| } |
| |
| return num_pt_pages; |
| } |
| |
| /* |
| * vmw_mob_build_pt - Set up a multilevel mob pagetable |
| * |
| * @mob: Pointer to a mob whose page table needs setting up. |
| * @data_addr Array of DMA addresses to the buffer object's data |
| * pages. |
| * @num_data_pages: Number of buffer object data pages. |
| * |
| * Uses tail recursion to set up a multilevel mob page table. |
| */ |
| static void vmw_mob_pt_setup(struct vmw_mob *mob, |
| struct vmw_piter data_iter, |
| unsigned long num_data_pages) |
| { |
| unsigned long num_pt_pages = 0; |
| struct ttm_buffer_object *bo = mob->pt_bo; |
| struct vmw_piter save_pt_iter; |
| struct vmw_piter pt_iter; |
| const struct vmw_sg_table *vsgt; |
| int ret; |
| |
| ret = ttm_bo_reserve(bo, false, true, NULL); |
| BUG_ON(ret != 0); |
| |
| vsgt = vmw_bo_sg_table(bo); |
| vmw_piter_start(&pt_iter, vsgt, 0); |
| BUG_ON(!vmw_piter_next(&pt_iter)); |
| mob->pt_level = 0; |
| while (likely(num_data_pages > 1)) { |
| ++mob->pt_level; |
| BUG_ON(mob->pt_level > 2); |
| save_pt_iter = pt_iter; |
| num_pt_pages = vmw_mob_build_pt(&data_iter, num_data_pages, |
| &pt_iter); |
| data_iter = save_pt_iter; |
| num_data_pages = num_pt_pages; |
| } |
| |
| mob->pt_root_page = vmw_piter_dma_addr(&save_pt_iter); |
| ttm_bo_unreserve(bo); |
| } |
| |
| /* |
| * vmw_mob_destroy - Destroy a mob, unpopulating first if necessary. |
| * |
| * @mob: Pointer to a mob to destroy. |
| */ |
| void vmw_mob_destroy(struct vmw_mob *mob) |
| { |
| if (mob->pt_bo) { |
| ttm_bo_put(mob->pt_bo); |
| mob->pt_bo = NULL; |
| } |
| kfree(mob); |
| } |
| |
| /* |
| * vmw_mob_unbind - Hide a mob from the device. |
| * |
| * @dev_priv: Pointer to a device private. |
| * @mob_id: Device id of the mob to unbind. |
| */ |
| void vmw_mob_unbind(struct vmw_private *dev_priv, |
| struct vmw_mob *mob) |
| { |
| struct { |
| SVGA3dCmdHeader header; |
| SVGA3dCmdDestroyGBMob body; |
| } *cmd; |
| int ret; |
| struct ttm_buffer_object *bo = mob->pt_bo; |
| |
| if (bo) { |
| ret = ttm_bo_reserve(bo, false, true, NULL); |
| /* |
| * Noone else should be using this buffer. |
| */ |
| BUG_ON(ret != 0); |
| } |
| |
| cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd)); |
| if (cmd) { |
| cmd->header.id = SVGA_3D_CMD_DESTROY_GB_MOB; |
| cmd->header.size = sizeof(cmd->body); |
| cmd->body.mobid = mob->id; |
| vmw_cmd_commit(dev_priv, sizeof(*cmd)); |
| } |
| |
| if (bo) { |
| vmw_bo_fence_single(bo, NULL); |
| ttm_bo_unreserve(bo); |
| } |
| vmw_fifo_resource_dec(dev_priv); |
| } |
| |
| /* |
| * vmw_mob_bind - Make a mob visible to the device after first |
| * populating it if necessary. |
| * |
| * @dev_priv: Pointer to a device private. |
| * @mob: Pointer to the mob we're making visible. |
| * @data_addr: Array of DMA addresses to the data pages of the underlying |
| * buffer object. |
| * @num_data_pages: Number of data pages of the underlying buffer |
| * object. |
| * @mob_id: Device id of the mob to bind |
| * |
| * This function is intended to be interfaced with the ttm_tt backend |
| * code. |
| */ |
| int vmw_mob_bind(struct vmw_private *dev_priv, |
| struct vmw_mob *mob, |
| const struct vmw_sg_table *vsgt, |
| unsigned long num_data_pages, |
| int32_t mob_id) |
| { |
| int ret; |
| bool pt_set_up = false; |
| struct vmw_piter data_iter; |
| struct { |
| SVGA3dCmdHeader header; |
| SVGA3dCmdDefineGBMob64 body; |
| } *cmd; |
| |
| mob->id = mob_id; |
| vmw_piter_start(&data_iter, vsgt, 0); |
| if (unlikely(!vmw_piter_next(&data_iter))) |
| return 0; |
| |
| if (likely(num_data_pages == 1)) { |
| mob->pt_level = VMW_MOBFMT_PTDEPTH_0; |
| mob->pt_root_page = vmw_piter_dma_addr(&data_iter); |
| } else if (vsgt->num_regions == 1) { |
| mob->pt_level = SVGA3D_MOBFMT_RANGE; |
| mob->pt_root_page = vmw_piter_dma_addr(&data_iter); |
| } else if (unlikely(mob->pt_bo == NULL)) { |
| ret = vmw_mob_pt_populate(dev_priv, mob); |
| if (unlikely(ret != 0)) |
| return ret; |
| |
| vmw_mob_pt_setup(mob, data_iter, num_data_pages); |
| pt_set_up = true; |
| mob->pt_level += VMW_MOBFMT_PTDEPTH_1 - SVGA3D_MOBFMT_PTDEPTH_1; |
| } |
| |
| vmw_fifo_resource_inc(dev_priv); |
| |
| cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd)); |
| if (unlikely(cmd == NULL)) |
| goto out_no_cmd_space; |
| |
| cmd->header.id = SVGA_3D_CMD_DEFINE_GB_MOB64; |
| cmd->header.size = sizeof(cmd->body); |
| cmd->body.mobid = mob_id; |
| cmd->body.ptDepth = mob->pt_level; |
| cmd->body.base = mob->pt_root_page >> PAGE_SHIFT; |
| cmd->body.sizeInBytes = num_data_pages * PAGE_SIZE; |
| |
| vmw_cmd_commit(dev_priv, sizeof(*cmd)); |
| |
| return 0; |
| |
| out_no_cmd_space: |
| vmw_fifo_resource_dec(dev_priv); |
| if (pt_set_up) { |
| ttm_bo_put(mob->pt_bo); |
| mob->pt_bo = NULL; |
| } |
| |
| return -ENOMEM; |
| } |